US2482546A - Phenoxyalkylamines as accelerators for photographic developers - Google Patents
Phenoxyalkylamines as accelerators for photographic developers Download PDFInfo
- Publication number
- US2482546A US2482546A US37965A US3796548A US2482546A US 2482546 A US2482546 A US 2482546A US 37965 A US37965 A US 37965A US 3796548 A US3796548 A US 3796548A US 2482546 A US2482546 A US 2482546A
- Authority
- US
- United States
- Prior art keywords
- color
- development
- developer
- silver
- developing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000839 emulsion Substances 0.000 description 20
- 239000003795 chemical substances by application Substances 0.000 description 13
- 150000001412 amines Chemical class 0.000 description 11
- 125000003118 aryl group Chemical group 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000000975 dye Substances 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 5
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- -1 alkylene amines Chemical group 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000003974 aralkylamines Chemical class 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 231100001231 less toxic Toxicity 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- IMLAIXAZMVDRGA-UHFFFAOYSA-N 2-phenoxyethanamine Chemical compound NCCOC1=CC=CC=C1 IMLAIXAZMVDRGA-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- QMJDEXCUIQJLGO-UHFFFAOYSA-N [4-(methylamino)phenyl] hydrogen sulfate Chemical compound CNC1=CC=C(OS(O)(=O)=O)C=C1 QMJDEXCUIQJLGO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- MQRJBSHKWOFOGF-UHFFFAOYSA-L disodium;carbonate;hydrate Chemical compound O.[Na+].[Na+].[O-]C([O-])=O MQRJBSHKWOFOGF-UHFFFAOYSA-L 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- LMAZKPOSWVOFGY-FBAUPLQOSA-N orine Natural products CO[C@H]1C[C@H](O[C@H]2CC[C@]3(C)[C@H]4C[C@@H](OC(=O)C=Cc5ccccc5)[C@]6(C)[C@@](O)(CC[C@]6(O)[C@]4(O)CC=C3C2)[C@H](C)OC(=O)C=Cc7ccccc7)O[C@H](C)[C@H]1O LMAZKPOSWVOFGY-FBAUPLQOSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RWPGFSMJFRPDDP-UHFFFAOYSA-L potassium metabisulfite Chemical compound [K+].[K+].[O-]S(=O)S([O-])(=O)=O RWPGFSMJFRPDDP-UHFFFAOYSA-L 0.000 description 1
- 229940043349 potassium metabisulfite Drugs 0.000 description 1
- 235000010263 potassium metabisulphite Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000001043 yellow dye Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
Definitions
- Thistinvention relates to photographic develop'ers'and particularly to phenoxyalkylamines as accelerators for photographic developers.
- amines such as primary and secondary alkyl and alkylene amines containing from 3 to '7. carbon atoms, 7 and heterocycli'c amines. such as morpholine' and piperidine as disclo'sed in United States Patent No'. 2,304,025, maybe added to photographic black and white and color developing solutions for the purpose of increasing the rate of development.
- these amines accelerate the development so as. to cause thedeveloping agent to form the image .(silverl er cio'ljr im' e). more rapidly than i-s"po'ssible without the'preserlfce of suchfamines;
- an object of the present invention to provide a black and white and color developer having an increased rate of development so that the developing time is substantially decreased to about one-half of the normal time, and which developer is less toxic than those heretofore used.
- phenoxyalkylamines employed in accordancewith the present invention are represented by the following general formulae:
- chlorine, bromine and the n is a positive integer of from 2 to 3
- X ' is hydrogen, a nitro group, or a halogen such as The following are examples of such phenoxy- 'fl Phenoxyethylamine .sstationsamateurish fl-ti-nitroph euoxy) -ethylaniine o emeemase,
- the sulfate and hydrochloride salts are readily prepared by the addition of a stoichiometrical quantity of dilute sulfuric acid and hydrochloric acid, respectively, and the carbonate is prepared by bubbling CO2, into an alcohol, ether, or benzene solution of the base.
- the developing time is cut from 20-30 minutes to 2-10 minutes. All of the layers are simultaneously developed, and the dye images formed are of excellent quality.
- the developing time with black and white developers for instance, solutions of hydroquinone and p-monomethylaminephenol sulfate and the like, is also out to about one-half without causing fog when such solutions contain a phenoxyalkylamine. 7
- the most useful concentrations in black and White and color developers range from about 1 to 8 grams per liter of developer solution.
- Example I p-Monomethylaminophenol sulfate grams 0.08 Sodium sulfite (anhydrous) do 45 Hydroquinone do 1.2 Sodium carbonate (monohydrate) do 8 Potassium metabisulfite do 4 Potassium bromide do 1.5 fi-Phenoxyethylamine do 4 Water to make liter 1
- This tank developer gives, on development at 20 C. of the usual roll film, a negative in about 6 to 8 minutes after fixing and washing. The time required to develop a similar roll in the same developer and at the same temperature, but containing no B-phenoxyethylamine, ranges from 15 to 20 minutes. Increasing the concentration of the ,8-phenoxyethy1amine to 6 grams per liter eifects a further decrease in time.
- Example II The following developer requires 30 minutes at 20 C. to give a satisfactory degree of color development with color paper:
- the color photographic multi-layer element utilized in the foregoing example consists of an integral tri-pack emulsion coated on either the usual paper base, or a clear cellulose acetate or nitrate film base, or in some cases an opaque white film base.
- Each of the emulsion layers is sensitized to one of the primary colors of light, namely, blue, green, and red.
- the top layer is ..-blue sensitive.
- a filter layer, yellow in color and blue absorbing, lies under the top layer. Below this filter layer, lies a green sensitive emulsion layer, and below this a red sensitive emulsion layer.
- Each of the three silver-halide emulsion layers contains dye forming compounds which unite during the development of a silver image in an aromatic amine developing agent to form a dye with the oxidation product of the developing agent.
- a yellow dye is formed in the blue sensitive emulsion; a magenta dye is formed in the green sensitive emulsion; and a cyan dye is formed in the red sensitive emulsion.
- the combination of the dye images from these three printing primaries yields the color picture.
- Suitable methods for the preparation of multi-color emulsion layers have been described in the literature relating to color photography, and are, therefore, not described here.
- Example III The following developer requires 19 minutes at 20 C. to give a satisfactory degree of color de-
- a color paper of excellent color rendition is developed in about 8 minutes.
- Increasing the concentration of the amine to 6 grams reduces the time of development to 6 minutes with the same results.
- Example IV The color developer of the preceding example with the addition of 5 grams of [3-phenoxyethy1- amine developed a multi-layer color film sheet, of the reversal type, and containing color formers fast to diffusion, in about 8 minutes at 20 C whereas without the 18-phenoxyethylamine, the,
- time required to color develop the said film sheet is over 30 minutes.
- R and R1 represent a group selected from the class consisting of hydrogen and methyl, R being hydrogen when R1 is methyl and R1 being hydrogen when R is methyl, 'n is a positive integer of from 2 to 3, and X is a group selected from the class consisting of hydrogen, nitro and halogen, and the salts of said amines.
- the step comprising the development of an exposed silver-halide emulsion in an alkaline developer containing an aromatic silver-halide developing agent for said emulsion and a developing accelerator selected from the class consisting of phenoxyalkylamines corresponding to thefollowing formulae:
- R and R1 represent a group selected from the class consisting of hydrogen and methyl, R being hydrogen when R1 is methyl and R1 being hydrogen when R is methyl, n is a positive integer of from 2 to 3, and X is a group selected from the class consisting of hydrogen, nitro and halogen, and the salts of said amines.
- the step comprising the development of an exposed silver-halide emulsion an; alkaline developer: containing" 18.1! aromatic siliverehalide developing agent for said" emulsionand a deyelrfi oping accelerator characterized by the formula:
- the step comprising the development of an exposed silver-halide emulsion in an alkaline developer containing an aromatic silver-halide developingagent for said emulsion and a developing accelerator characterized by the formula:
- the step comprising the development of an exposed silver-halide emulsion in an alkaline developer containing an aromatic silver-halide developing agent for said emulsion and a developing accelerator characterized by the formula:
- a color -forming photographic developer comprising a primary aromatic amino developing agent and a phenoxyalkylamine selected from the class consisting of those corresponding to the following formulae:
- a color-forming photographic developer 7 8 cqmprismg a primary aromatiearnino develoging REFERENCES CITED agent and a phenoxyalkylamlne characterlzed by the following formula: v V
- the following references are of record in the file of this patent:
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE490074D BE490074A (en)) | 1948-07-09 | ||
| US37965A US2482546A (en) | 1948-07-09 | 1948-07-09 | Phenoxyalkylamines as accelerators for photographic developers |
| GB14279/49A GB658575A (en) | 1948-07-09 | 1949-05-27 | Phenoxyalkylamines as accelerators for photographic developers |
| DEP45570A DE851719C (de) | 1948-07-09 | 1949-06-12 | Beschleuniger fuer photographische Entwickler |
| CH280519D CH280519A (fr) | 1948-07-09 | 1949-07-04 | Révélateur photographique contenant un accélérateur. |
| FR990475D FR990475A (fr) | 1948-07-09 | 1949-07-09 | Phénoxyalkylamines employées comme accélérateurs pour les révélateurs photographiques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37965A US2482546A (en) | 1948-07-09 | 1948-07-09 | Phenoxyalkylamines as accelerators for photographic developers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2482546A true US2482546A (en) | 1949-09-20 |
Family
ID=21897321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US37965A Expired - Lifetime US2482546A (en) | 1948-07-09 | 1948-07-09 | Phenoxyalkylamines as accelerators for photographic developers |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2482546A (en)) |
| BE (1) | BE490074A (en)) |
| CH (1) | CH280519A (en)) |
| DE (1) | DE851719C (en)) |
| FR (1) | FR990475A (en)) |
| GB (1) | GB658575A (en)) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE969677C (de) * | 1952-04-25 | 1958-07-03 | Hauff G M B H | Verfahren zur Herstellung eines aktivierten photographischen Schwarzweissentwicklers |
| US3002997A (en) * | 1958-01-29 | 1961-10-03 | Polaroid Corp | Photographic products, processes and compositions |
| US3129100A (en) * | 1961-03-16 | 1964-04-14 | Agfa Ag | Developing accelerators for silver halide emulsion layers |
| EP0266797A2 (en) | 1986-11-07 | 1988-05-11 | Fuji Photo Film Co., Ltd. | Method of processing silver halide color photographic material and photographic color developing composition |
| EP0452886A2 (en) | 1990-04-17 | 1991-10-23 | Fuji Photo Film Co., Ltd. | Method of processing a silver halide color photographic material |
| WO1991019399A1 (en) * | 1990-06-01 | 1991-12-12 | Thomson Consumer Electronics, Inc. | Chrominance processing system |
| EP0507145A1 (en) * | 1991-04-03 | 1992-10-07 | Minnesota Mining And Manufacturing Company | Alkaline black-and-white developer for silver halide photographic material |
| US5310633A (en) * | 1992-05-13 | 1994-05-10 | Fuji Photo Film Co., Ltd. | Bleach-fixing composition for color photographic material and method for processing a color photographic material with the same |
| US5362610A (en) * | 1991-10-28 | 1994-11-08 | Konica Corporation | Photographic processing agent |
| US5366853A (en) * | 1991-11-06 | 1994-11-22 | Konica Corporation | Tablet-shaped processing agent and method for processing silver halide photographic light sensitive materials |
| EP0631185A1 (en) | 1993-06-11 | 1994-12-28 | Fuji Photo Film Co., Ltd. | Method for continuously processing silver halide color photosensitive material |
| US5409805A (en) * | 1993-07-29 | 1995-04-25 | Konica Corporation | Solid processing agent for silver halide photographic light-sensitive materials |
| US5452045A (en) * | 1992-10-30 | 1995-09-19 | Konica Corporation | Apparatus for processing a light-sensitive silver halide photographic material |
| EP0686875A1 (en) | 1994-06-09 | 1995-12-13 | Fuji Photo Film Co., Ltd. | Method of processing silver halide color photographic materials |
| EP0720049A2 (en) | 1990-05-09 | 1996-07-03 | Fuji Photo Film Co., Ltd. | Photographic processing composition and processing method using the same |
| US5576161A (en) * | 1994-08-12 | 1996-11-19 | Konica Corporation | Silver halide light-sensitive photographic material and method of processing thereof |
| US5766830A (en) * | 1994-09-09 | 1998-06-16 | Konica Corporation | Photographic processing method for processing a silver halide photographic light-sensitive material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2181941A (en) * | 1936-12-14 | 1939-12-05 | Agfa Ansco Corp | Photographic developer |
| US2327813A (en) * | 1939-08-03 | 1943-08-24 | Eastman Kodak Co | Photographic solution |
| US2371740A (en) * | 1942-03-20 | 1945-03-20 | Eastman Kodak Co | Developers containing silver halide solvents |
-
0
- BE BE490074D patent/BE490074A/xx unknown
-
1948
- 1948-07-09 US US37965A patent/US2482546A/en not_active Expired - Lifetime
-
1949
- 1949-05-27 GB GB14279/49A patent/GB658575A/en not_active Expired
- 1949-06-12 DE DEP45570A patent/DE851719C/de not_active Expired
- 1949-07-04 CH CH280519D patent/CH280519A/fr unknown
- 1949-07-09 FR FR990475D patent/FR990475A/fr not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2181941A (en) * | 1936-12-14 | 1939-12-05 | Agfa Ansco Corp | Photographic developer |
| US2327813A (en) * | 1939-08-03 | 1943-08-24 | Eastman Kodak Co | Photographic solution |
| US2371740A (en) * | 1942-03-20 | 1945-03-20 | Eastman Kodak Co | Developers containing silver halide solvents |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE969677C (de) * | 1952-04-25 | 1958-07-03 | Hauff G M B H | Verfahren zur Herstellung eines aktivierten photographischen Schwarzweissentwicklers |
| US3002997A (en) * | 1958-01-29 | 1961-10-03 | Polaroid Corp | Photographic products, processes and compositions |
| US3129100A (en) * | 1961-03-16 | 1964-04-14 | Agfa Ag | Developing accelerators for silver halide emulsion layers |
| EP0266797A2 (en) | 1986-11-07 | 1988-05-11 | Fuji Photo Film Co., Ltd. | Method of processing silver halide color photographic material and photographic color developing composition |
| EP0452886A2 (en) | 1990-04-17 | 1991-10-23 | Fuji Photo Film Co., Ltd. | Method of processing a silver halide color photographic material |
| EP0720049A2 (en) | 1990-05-09 | 1996-07-03 | Fuji Photo Film Co., Ltd. | Photographic processing composition and processing method using the same |
| WO1991019399A1 (en) * | 1990-06-01 | 1991-12-12 | Thomson Consumer Electronics, Inc. | Chrominance processing system |
| US5478706A (en) * | 1991-04-03 | 1995-12-26 | Minnesota Mining And Manufacturing Company | Alkaline black-and-white developer for silver halide photographic material |
| EP0507145A1 (en) * | 1991-04-03 | 1992-10-07 | Minnesota Mining And Manufacturing Company | Alkaline black-and-white developer for silver halide photographic material |
| US5362610A (en) * | 1991-10-28 | 1994-11-08 | Konica Corporation | Photographic processing agent |
| US5366853A (en) * | 1991-11-06 | 1994-11-22 | Konica Corporation | Tablet-shaped processing agent and method for processing silver halide photographic light sensitive materials |
| US5310633A (en) * | 1992-05-13 | 1994-05-10 | Fuji Photo Film Co., Ltd. | Bleach-fixing composition for color photographic material and method for processing a color photographic material with the same |
| US5452045A (en) * | 1992-10-30 | 1995-09-19 | Konica Corporation | Apparatus for processing a light-sensitive silver halide photographic material |
| EP0631185A1 (en) | 1993-06-11 | 1994-12-28 | Fuji Photo Film Co., Ltd. | Method for continuously processing silver halide color photosensitive material |
| US5409805A (en) * | 1993-07-29 | 1995-04-25 | Konica Corporation | Solid processing agent for silver halide photographic light-sensitive materials |
| EP0686875A1 (en) | 1994-06-09 | 1995-12-13 | Fuji Photo Film Co., Ltd. | Method of processing silver halide color photographic materials |
| US5576161A (en) * | 1994-08-12 | 1996-11-19 | Konica Corporation | Silver halide light-sensitive photographic material and method of processing thereof |
| US5766830A (en) * | 1994-09-09 | 1998-06-16 | Konica Corporation | Photographic processing method for processing a silver halide photographic light-sensitive material |
Also Published As
| Publication number | Publication date |
|---|---|
| FR990475A (fr) | 1951-09-21 |
| CH280519A (fr) | 1952-01-31 |
| DE851719C (de) | 1952-10-06 |
| BE490074A (en)) | |
| GB658575A (en) | 1951-10-10 |
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